package handlers

import (
	"encoding/json"
	"net/http"

	"git.haelnorr.com/h/golib/hws"
	"git.haelnorr.com/h/oslstats/internal/notify"
	"git.haelnorr.com/h/oslstats/internal/throw"
	"github.com/a-h/templ"
	"github.com/pkg/errors"
)

// parseErrorDetails extracts code and stacktrace from JSON Details field
// Returns (code, stacktrace). If parsing fails, returns (500, original details string)
func parseErrorDetails(details string) (int, string) {
	if details == "" {
		return 500, ""
	}

	var errDetails notify.ErrorDetails
	err := json.Unmarshal([]byte(details), &errDetails)
	if err != nil {
		// Not JSON or malformed - treat as plain stacktrace with default code
		return 500, details
	}

	return errDetails.Code, errDetails.Stacktrace
}

func renderSafely(page templ.Component, s *hws.Server, r *http.Request, w http.ResponseWriter) {
	err := page.Render(r.Context(), w)
	if err != nil {
		throw.InternalServiceError(s, w, r, "Failed to render page", errors.Wrap(err, "page."))
	}
}

func logError(s *hws.Server, msg string, err error) {
	s.LogError(hws.HWSError{
		Message:    msg,
		Error:      err,
		Level:      hws.ErrorERROR,
		StatusCode: http.StatusInternalServerError,
	})
}